5513221 has 8 divisors (see below), whose sum is σ = 6390144. Its totient is φ = 4658640.

The previous prime is 5513203. The next prime is 5513227. The reversal of 5513221 is 1223155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5513221 - 2⁷ = 5513093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5513227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5050 + ... + 6043.

It is an arithmetic number, because the mean of its divisors is an integer number (798768).

Almost surely, 2^5513221 is an apocalyptic number.

It is an amenable number.

5513221 is a deficient number, since it is larger than the sum of its proper divisors (876923).

5513221 is a wasteful number, since it uses less digits than its factorization.

5513221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11171.

The product of its digits is 300, while the sum is 19.

The square root of 5513221 is about 2348.0249146889. The cubic root of 5513221 is about 176.6587421785.

Adding to 5513221 its reverse (1223155), we get a palindrome (6736376).

It can be divided in two parts, 551 and 3221, that multiplied together give a palindrome (1774771).

The spelling of 5513221 in words is "five million, five hundred thirteen thousand, two hundred twenty-one".